The purpose of this study is to explore the influences of Second Generation National Health Insurance (NHI) supplementary premium on the stock prices in Taiwan. We employ the event study methodology to analyze the effects on the stock prices during the amendment period of NHI act. The results show significant evidences. The possible reason is that the Second Generation NHI supplementary premium charging from dividend income makes investors real revenues decrease and makes them feel pessimistic. There are some managerial implications from our results. Most importantly, the government should actively communicate with the public and fully explain the pros and cons of new policy. Such promotions can avoid the asymmetric information among investors and avoid too much pessimistic reflections of investors resulting from misunderstanding the policies.

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Proceedings of the 2014 International Conference in Management Sciences and Decision Making==2014年管理科學與經營決策國際學術研討會論文集